That’s a bit hard, but I agree. GPT 5 messed up my code pretty bad.
In other case it was able to refactor huge file very well, where I think Claude 4 would fail.
So with fresh canvas and as senior advisor GPT 5 will be great, but letting it into existing codebase end up in disaster for me.
I have paid projects in production. I am far from senior dev, but I am far from pure vibe coder as well. Just some background on epx :).
GPT-5 ■■■■■ too much. It failed on a code review, despite Grok successfully doing the same code review. Attaching a video for reference where it suggested random things that don’t make sense to my codebase and went in a big “end” loop.